setValue

sets a new value for the component

void setValue(Date|string value, [any config] );

value	Date\|string	a new value for the control
config	any	operation config

Example

webix.ui({
  view: "datepicker",
  id: "date",
  value: new Date(2020, 5, 1), 
  label: "Select Date", 
  timepicker: true
});
 
$$("date").setValue(new Date(2020, 7, 9));

Details

The second parameter can be of any type (from a string to an object). config will be passed to the onChange event as the last parameter.